From patchwork Mon Apr 21 13:40:21 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaud Lecomte X-Patchwork-Id: 883367 Received: from plesk.hostmyservers.fr (plesk.hostmyservers.fr [45.145.164.37]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 23F72264FA7; Mon, 21 Apr 2025 13:40:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.145.164.37 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745242836; cv=none; b=gI+B99KKx8RLQf7QU97l/likA9OYGbQldcLYhuvQzUiWlpM2PyzOey7B5e4SIEdEebpPM5QQep2ghfAqbxhuyICQe0O8vy3uX2rpOAHRJbalijHcNaUSSQATNFVr4vqCzUb+L8Zar9sjtlotGbCD3jsS+8LqTl0Ceocqw1yG0oo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745242836; c=relaxed/simple; bh=4hoBbhyRgaULiQgIXpzqfGEXkdPMkG927Dt/QlBHqqo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=chgkVWm1U7qofQ6ZBcay+A9AYLzHxcbAnDqfu7XwB9l8ePBF+9rBLV+DHoEkyQ/FNIyw5nlNyqtsdGmSrGRdT3oaGL/OgWQE7rSjJDa4ktWfDhv59n3e0YnN4yKL6J5UQlCKPHBY7lsVV1cLz0ANcsyhjI4U2wOP2ef6XZ0k/6Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=arnaud-lcm.com; spf=pass smtp.mailfrom=arnaud-lcm.com; arc=none smtp.client-ip=45.145.164.37 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=arnaud-lcm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arnaud-lcm.com Received: from arnaudlcm-X570-UD.. (unknown [IPv6:2a01:e0a:3e8:c0d0:8e8c:c49a:b330:a587]) by plesk.hostmyservers.fr (Postfix) with ESMTPSA id 7AA40549C1; Mon, 21 Apr 2025 13:40:29 +0000 (UTC) Authentication-Results: Plesk; spf=pass (sender IP is 2a01:e0a:3e8:c0d0:8e8c:c49a:b330:a587) smtp.mailfrom=contact@arnaud-lcm.com smtp.helo=arnaudlcm-X570-UD.. Received-SPF: pass (Plesk: connection is authenticated) From: Arnaud Lecomte To: syzbot+0192952caa411a3be209@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, mchehab@kernel.org, syzkaller-bugs@googlegroups.com Subject: syz test Date: Mon, 21 Apr 2025 15:40:21 +0200 Message-ID: <20250421134021.155569-1-contact@arnaud-lcm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <6805a24c.050a0220.4e547.000b.GAE@google.com> References: <6805a24c.050a0220.4e547.000b.GAE@google.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-PPP-Message-ID: <174524282983.3221.6184008662178631205@Plesk> X-PPP-Vhost: arnaud-lcm.com #syz test @@ -757,6 +760,10 @@ static int az6007_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], for (i = 0; i < num; i++) { addr = msgs[i].addr << 1; + if (msgs[i].len < 1 || msgs[i].len >= sizeof(st->data) - 6) { + ret = -EIO; + goto err; + } if (((i + 1) < num) && (msgs[i].len == 1) && ((msgs[i].flags & I2C_M_RD) != I2C_M_RD) @@ -821,6 +828,7 @@ static int az6007_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], } err: mutex_unlock(&st->mutex); + usb_unlock_device(d->udev); if (ret < 0) { pr_info("%s ERROR: %i\n", __func__, ret); return ret; diff --git a/drivers/media/usb/dvb-usb-v2/az6007.c b/drivers/media/usb/dvb-usb-v2/az6007.c index 65ef045b74ca..784cba9c15ef 100644 --- a/drivers/media/usb/dvb-usb-v2/az6007.c +++ b/drivers/media/usb/dvb-usb-v2/az6007.c @@ -751,6 +751,9 @@ static int az6007_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int length; u8 req, addr; + if (!usb_trylock_device(d->udev)) + return -EBUSY; + if (mutex_lock_interruptible(&st->mutex) < 0) { + usb_unlock_device(d->udev); return -EAGAIN; }